Algonquin RD over Spring CR
PoorMcHenry County, Illinois · 0.1 MI SW Plum Tree · Structure no. 056314800000000
- Built
- 1986
- 39 years old
- Condition
- Poor
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 3,200
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Algonquin RD over Spring CR is a prestressed concrete box beam or girders - multiple carrying Algonquin RD over Spring CR in McHenry County, Illinois. It was built in 1986, so it is 39 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 3,200 vehicles a day, roughly 3% of them trucks, projected to reach 3,840 by 2046. The structure is 53 ft (16.2 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Algonquin RD over Spring CR built?
It was built in 1986, making it 39 years old in 2025.
What condition is Algonquin RD over Spring CR in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does Algonquin RD over Spring CR carry?
About 3,200 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Algonquin RD over Spring CR?
The structure is 53 ft (16.2 m) long with a longest span of 52 ft (15.8 m) and a deck 32 ft wide.
Who owns Algonquin RD over Spring CR?
It is owned by the Town or Township Highway Agency.